Engineering Sciences
GATE XE kind:question PYQs
Build your understanding with focused practice from past exam papers.
Questions 1701–1710 of 1772. Imported answers require independent review unless marked reviewed.
Question 104
Open questionXE-FMCQ1 markNeeds review
Novolac and Resole are A-stage low molecular weight phenolic resin products that are
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 105
Open questionXE-FMCQ1 markNeeds review
Which of the following reagents can act as an initiator at room temperature?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 106
Open questionXE-FMCQ1 markNeeds review
The impact strength of polystyrene can be enhanced by blending/mixing with
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 107
Open questionXE-FMCQ1 markNeeds review
The melt processing temperature of a semicrystalline thermoplastic polymer is
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 108
Open questionXE-FMCQ1 markNeeds review
The unit of viscosity of a polymer is expressed as
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 109
Open questionXE-FMCQ2 marksNeeds review
Based on the graphs 1-5, which option best describes the stress-strain behaviour of materials listed as P, Q, R, S and T?
P-Hard and brittle
Q-Hard and tough
R-Soft and weak
S-Hard and strong
T-Soft and tough
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 110
Open questionXE-FMCQ2 marksNeeds review
The two characterization techniques which can be used to determine degree of crystallinity of a polymer are
P. Scanning Electron Microscopy
Q. Thermogravimetric Analysis
R. Wide Angle X-Ray Diffraction
S. Differential Scanning Calorimetry
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 111
Open questionXE-FNAT2 marksNeeds review
The density of polyethylene crystals is 998 kg/m³ and that of totally amorphous polyethylene is 886 kg/m³. If the density of a polyethylene sample is 949 kg/m³, the crystallinity in volume fraction is ____ % (round off final answer to two digits after decimal place).
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 112
Open questionXE-FNAT2 marksNeeds review
The polydispersity index of a polymer sample containing 200 molecules each of molecular weight 10,000 gmol⁻¹, 300 molecules each of molecular weight 30,000 gmol⁻¹ and 500 molecules each of molecular weight 50,000 gmol⁻¹ is ______ (round off final answer to two digits after decimal place).
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 113
Open questionXE-FMCQ2 marksNeeds review
Match the following rubber additives to their function:
Additive
P. Dicumyl peroxide
Q. Pentachlorothiophenol
R. ZnO with stearic acid
S. Zinc diethyldithiocarbamate
Function
Ultrafast accelerator
Activator
Curing agent
Peptizer
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer